GMU 143

About GMU 143

GMU 143 is a GMU in Colorado, United States, set by Colorado Parks and Wildlife. It covers about 1,787 km² (690 mi²). No town of the HuntGrid list lies inside it; the nearest is Raton, about 51 km from its edge.

HuntGrid draws its boundary from Colorado Parks and Wildlife's data for the 2026 season. The agency's regulations say which species and seasons use it.

Unit code

143

Area

1,787 km²

Area (miles)

690 mi²

Boundaries

2026

Public and protected land mapped inside it

HuntGrid's public land layers map about 168 km² of public or protected land inside it, 9% of the unit. Some protected land is privately owned (a conservation group's, for one). By manager, as the source names it:

Boundaries are approximate and aren't legal descriptions. Public land doesn't always mean you can hunt there: check your local regulations and posted signs.

Public land: U.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2025, Protected Areas Database of the United States (PAD-US) 4.1

Seasons and regulations

Seasons for this unit that a person has checked against Colorado Parks and Wildlife's regulations:

The official regulations have the final word: check them before you hunt.

Official regulations: Colorado Parks and Wildlife

Units around it

Next to it in the same unit system

• GMU 136
• GMU 137
• GMU 140
• GMU 144
• GMU 147

Other hunting units that cover part of it

• Central Flyway (regular season) (goose zone)
• S48 Carrizo Canyon (bighorn sheep GMU)
• Southeast Zone (duck zone)

What HuntGrid shows for GMU 143

• Its boundary on the map; tap inside it for the unit's card with the agency's regulations link.
• Public land and the other hunting units in the same view, each with its source.
• Season dates once a person has checked them, and legal shooting hours where the rule is checked.
• Hourly wind with a scent cone for every stand, and official weather alerts.
• Offline maps: download the area and use the map, your pins and the forecast with no signal.

Open in HuntGrid

Questions

How big is GMU 143?

About 1,787 km² (690 mi²), as HuntGrid maps Colorado Parks and Wildlife's boundary.

How much public or protected land is in GMU 143?

HuntGrid's public land layers map about 168 km² of public or protected land, 9% of the unit; the largest share is managed by Colorado State Land Board. Public land doesn't always mean you can hunt there.

Where are the season dates for GMU 143?

This page lists 24 seasons a person has checked against Colorado Parks and Wildlife's regulations; the official regulations have the final word.

Which units are next to GMU 143?

In the same unit system: GMU 136, GMU 137, GMU 140, GMU 144 and GMU 147.

More on huntgrid.net

• Hunting map of Colorado
• HuntGrid, the hunting app

Sources

Unit boundary: Colorado Parks and Wildlife. Boundaries for the 2026 season.

• The agency's boundary data
• Official regulations

HuntGrid isn't affiliated with Colorado Parks and Wildlife. The official regulations and maps have the final word.